Mechanism foe circular emitting machines



(No Model.) 4 sheetssheen 1.

No. 451,747. Patented May 5, 1891.

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(No Model.)

J BETTNEY THICKENING MECHANISM FOR CIRCULAR KNITTING MACHINES. No. 451,747..

Patented May 5, 1891.

FIG.5.

(N Model.) 4 Sheets- Sheet 3.

J. BETTNEY. THIGKENING MBGHANISM POR CIRCULAR KNITIING MACHINES.` No. 451,747. Patented May 5, 1891.

4 sheetssheet '4.

(No Model.) v

- J. BETTNBY. THICKENING MEGHANISM FUR CIRCULAR KNITTING MACHINES.

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JAMES BETTNEY, GF NOTTINGHAM, ENGLAND.

SPECIFICATION forming partof Letters Patent No. 451,747, dated May 5, 1891.

` Application iiled July 1, 1890. Serial No. 357,360. (No model.) Patented in England November 5, 1889, No. 17,622.

knitting machines; and it consists of certain new and useful additions to the feed mechanism for enabling the operative to work an additional thread into the material where necessary, such additional thread being carried to and worked into the material together with the ordinary thread, whereby certain parts of the material can be thickened by the process commonly known as splicing In order that my said invention may be `particularly described and ascertained, reference is hereby made to the accompanying drawings, in which similar letters of reference indicate corresponding parts.

Figure 1 is a plan of a portion of a circular hosiery knitting machine iitted with my additional mechanism. Fig. 2 is a plan of another portion of the same. Fig. 3 is an elevation, partly in section, showing the carrier, the bolt for working the same, and its connection with the cylinder and cam-plate. Fig. 4 is a side view, and Fig. 5 an edge view, of the carrier. Fig. 6 is an elevation of the lever for operating the shear-blade for cutting the additional thread. Fig. 7 is an elevation of the catch and spring, with sections of portions of the cylinder and cam-plate for connecting and disconnecting the thickening mechanism. Fig. Sis a diagram taken at right angles to the looper-wheel, showing the relative positions ofthe threadguide, shear-blade, and looper-wheel. Fig. 9 is a diagram taken at right angles to Fig. 8. Fig. 10 is a section of the looper-wheel, showing the particular form of one of the wings for seizing the additional thread which forms the thickening of the material and passing such additional thread on to the needles.

Referring to Figs. l to 5, a is a bracket bolted to the bed-plate b. a and a2 are stationarysockets attached to or forming part of the bracket c. These sockets act as guides to the vertical reciprocating bolt c. c' is an adjustable collar secured to the bolt o by a screw c2. This collar receives the upward thrust of the spiral spring d, whereby the bolt c is constantly pressed upward. The lower end of the bolt c is iitted with a roller-truck e, the roller working on a pin e. fis the carf rier-arm for conveying the additional thread for thickening. brating lever pivoted to the upper end of the bolt c at f. Fig. i is a separate view of the carrierf, and Fig. 5 is a plan of the same. f2 is a movable plate, which slides in the slot formed inA the carrier to receive the pin CL4. This pin CL4 is riveted to the plate a3, and the plate t3 is secured to the bracket ct by a screw a5, as shown in Figs. 1 and 3.

Referring to Figs. l, G, and 7, g is the cylinder, to which the needles g are fitted in the 'usual manner. 72, is a cam plate having flanges, cams, or thickened portions h and h2. The cam-plate his supported and rotates upon the vsame center as the cylinder g. The cam-face 71, engages with and operates the truck e, bolt c, and carrier f, and the camface h2 engages with and operates the truck m5, lever m, and shear-blade n. The extent of the cam-faces h and h2 round portions of the cam-plate depends upon the extent to which the thickening is required to be applied to the material, usually about halfJ the circumference. t', Fig. 7, is a catch pivoted at @"3 to a lug or bracket t2, formed in one with the cam-plate h. t', Fig. 2, is a notch in the rim of the cylinder for receiving the catch t'. b is a part of the stationary frame. It will thus be understood that the cylinder g and camplate h rotate together when the cat-eht is in the notch t" of the cylinder, as shown in Fig. 7, and that when the catcht' is out of the notch i', as shown in Fig. 2, the cam-plater'emains stationary. My additional mechanism is then disconnected and -ordinary knitting only is effected by the machine. 7o is a spring formed and fitted so as to retain the catch t' in the lockedor unlocked position. o is the curved cloth-presser. p is the looper-wheel, and o' is the sinker-wheel.

Referring to Figs. 1, 6, 8, 9, and 10, m is a curved lever pivoted at m to the bracket m6, the bracket being firmly bolted to the bed- This carrier consists of a viv IOO plate b. The lower end of the lever on is litted with the roller-truck m5, the roller of which is alternately kept in Contact with the cam-plate h and raised cani-surface h2 by the 5 spring 'm2, attached to the pin ma on the lever on, and to the stationary `pin m, xed to the 'st-em of the presser-wheel s. The lever on is caused to oscillate upon its center m by the contact of the truck m5, rolling upon the norio mal and raised surfaces of the cam h and h2. The upper end of the lever '1n is formed as a fork m7 to receive the end of the shear-blade n, whereby the shear-blade is caused to cut the thread at the proper moment. The shearblade n is pivoted to the lower end of the bolt nf', and is held down in position bythe spring n. n2 is a small lever pivoted to the pillar n* and pressed downward by the spring n4, attached to the bolt ns. n is a small plate at- .zc tached to the shear-blade n, having an inclined surface for lifting the lever n2 when the shear-blade revolves on the bolt n, The blade n and lever n2 co-operateswith a fixed shear-blade nS to sever and to hold down the thread. n, Fig. 9, is the ordinary knittingthread, and tis the guide for the same, guiding the thread n to the looper-wheel p. The end of the guide t is provided with a hook t', which carries the ordinary thread n and receives the 3o additional thread Iv, Fig. 3, when lowered by the carrier f. lVhen the additional thread c is again raised by the carrier f, the ordinary thread uis prevented from rising therewith by the stud t2. It will be understood that when the carrier fis raised the additional thread v is thereby raised out ot' the hook t above and clear of the looper-wheel p. This looper-wheel has one of its wings formed with a projection, as shown at p in Fig. l0.

The operation is as follows: When the carrier f is lowered, the additional thread u is thereby carried down into the hook t of the ordinary thread guide t. This movement causes the specially-shaped wing p of the looper-wheel p to seize the additional thread n and carry it to the needles with the ordinary thread n. At the same moment the shear-blade n is withdrawn from Contact With the lever n2 by the operation of the fork m7 5o of the lever on. The lever n2 is lifted by the platel ne, attached to n, whereby the additional thread fu is released from the lever n2 and permitted to travel with the thread n to the needles. lVhen the cani-plate h has revolved and carried the raised portion of the camm h beyond the range of the truck e, the

latter ascends and allows the bolt c to raise` the carrier f. The additional thread fn is thereby Withdrawn from the hook t. At the same time the cam-plate h has revolved and carried the raised portion ot` the cam h2 beyond the range of the truck m5, whereby the fork in7 has returned the shear-blade n to the position shown in Fig. 8, the lever n6 falls upon and secures the end of the additional thread, and the shear-blade n at the same time severs its connection with the fabric. The additional thread is then held Stationary until the cams 7L and h2 on the cam-plate 7L again come round to the trucks e and onand repeat the operation. By these means the additional thread is seized at the proper instant, added to the fabric for thickening, then cut off, secured, and held ready t'or the next operation of thickening.

I claim-- l. In a circular-knitting machine, the combination of the needle-cylinderg, having notch 1I', the cam-plate 7L, provided with bracket t2, and the catch 2', pivoted to said bracket, substantially as and for the purpose described.

2. The combination of the cam-plate h,the vertically-reciprocating bolt c, provided with roller-truck c and spring (l, and the carrier f for carrying the additional thread for splicing and thickening, substan tially as described.

8. The combination of the cam-plate h, the lever m, provided with roller-truck m5, spring m2, and fork m7, the shear-blade n, the fixed shear-blade, and the lever n2, substantiall y as described.

2l. The combination of the guide t, having` hook t and stud 152, for receiving and guiding the ordinary thread, the carrier f for carrying the additional thread, and means for actuating the carrier, substantially as described.

5. The combination, with the looper-wheel p, having wings, one of which is provided with a projection p for the purpose of seizing the additional thread', of the carrier f for carrying said additional thread, and actuating means for said carrier, substantially as described.

G. The herein-described looper-wheel having a wing provided with projection p', substantially as and for the purpose set forth.

JAMES BETTNEY.

Witnesses:

MARK SHAW, 32 Tennyson Street, N ottt'nghaon, Law Clerk.

A. A. DIoKINsoN, l Y 17 Lmncote Grove, lVottingzcun, Law Ole/rk.

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